Product produced by coating a substrate with an electrically conductive layer
First Claim
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1. A plate of glass coated with a layer consisting essentially of indium and tin oxides having zones of a low emissivity and resistivity of less than or equal to 0.15 and 3×
- 10-4 ohm-cm, respectively for a thickness of between about 1800 and 4500 angstroms with at least one other zone wherein the emissivity and resistivity are higher than 0.15 and 3×
10-4 ohm-cm, respectively that is produced by;
preparing a dry metal composition containing indium formate;
mixing at least a powdered or gaseous tin compound or a gaseous organotin compound with the indium formate in proportions ranging from one to thirty weight percent;
depositing said composition onto a surface of a heated glass plate so as to pyrolyze the composition; and
heating the coated glass plate to enhance the properties of the layer.
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Abstract
A method for coating a substrate, preferably of glass, with a pyrolyzed transparent, electroconductive layer. The coating is comprised of indium formate, optionally mixed with a powdered or gaseous tin compound or a gaseous organotin compound. The coating layer is deposited upon a hot substrate whereupon it pyrolytically decomposes, forming a layer which is subsequently heat treated in a reducing or an oxidizing atmosphere to optionally enhance the low emissivity and low resistivity of the coating or reduce said low emissivity and low resistivity properties.
25 Citations
8 Claims
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1. A plate of glass coated with a layer consisting essentially of indium and tin oxides having zones of a low emissivity and resistivity of less than or equal to 0.15 and 3×
- 10-4 ohm-cm, respectively for a thickness of between about 1800 and 4500 angstroms with at least one other zone wherein the emissivity and resistivity are higher than 0.15 and 3×
10-4 ohm-cm, respectively that is produced by;preparing a dry metal composition containing indium formate; mixing at least a powdered or gaseous tin compound or a gaseous organotin compound with the indium formate in proportions ranging from one to thirty weight percent; depositing said composition onto a surface of a heated glass plate so as to pyrolyze the composition; and heating the coated glass plate to enhance the properties of the layer.
- 10-4 ohm-cm, respectively for a thickness of between about 1800 and 4500 angstroms with at least one other zone wherein the emissivity and resistivity are higher than 0.15 and 3×
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2. A plate of glass coated with a pyrolyzed metal oxide layer consisting essentially of indium oxide formed by depositing a predetermined amount of a dry, powdered organic indium compound on the heated glass plate, thereby pyrolyzing the indium compound;
- wherein the layer comprises a first zone having an emissivity of less than or equal to 0.15 and a resistivity of less than or equal to 3×
10-4 ohm-cm, and a second zone having a emissivity greater than 0.15 and a resistivity greater than 3×
10-4 ohm-cm. - View Dependent Claims (3, 4, 5, 6, 7, 8)
- wherein the layer comprises a first zone having an emissivity of less than or equal to 0.15 and a resistivity of less than or equal to 3×
Specification